Questions tagged [hlsl]
A proprietary shading language developed by Microsoft for use with the Microsoft Direct3D API.
666 questions
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URP Maximum Sample Index (16) with Light Cookie Input
I just recently imported a new asset package, all of the materials use the URP lit shader, no custom shaders. However, now I can't build the game because I keep getting the same errors:
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HLSL Automatic Root Signature Creation
I know of two different ways to specify a root signature in DX12, and those are:
Creating one with D3D12_VERSIONED_ROOT_SIGNATURE_DESC and ...
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218
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Decompiling a DXBC - why is an integer operation working with a massive float?
I'm decompiling a game's shaders with RenderDoc in an effort to understand them, and I encountered this segment:
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113
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What is the proper way to write a pixel shader that only outputs depth?
I have an effect that I want to only write to depth.
commandList->OMSetRenderTargets(0, nullptr, FALSE, &m_mainDepthStencilDescriptorHandle.getCpuHandle());
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40
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Can we use geometry shader to allow or not the drawing based on a stencil value?
I have a forward reflexion protocol producing a reflexion map used for final scene rendering. I can have several heights of ground we can defined as "mirrors". In order to have only one map ...
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How does SamplerCmp works compared to Sample (PCF shadow blur)
I'm doing 3x3 PCF blur with either Texture.SampleCmp (from CascadedShadow demo in DX11) or Texture.Sample (DX11 SM5) like this
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2
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225
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Difficulty for using asfloat/asuint
I'm trying to convert a RGB color to a RGB555 format to be saved as a float in a R16F or R16UNORM texture.
I have a method that works quite well using only float maths for both types of surface but I ...
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Advice on how to best use if possible 4 GatherCmpRed to emulate a 4x4 PCF sampling for shadowmap blur
In a part of my level I have shadows close to the camera where a good blur is important. Currently I have implemented a 4x4 PCF, thus requiring 16 texture samplings.
I'm trying to see if the ...
- 333
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74
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Shadow artifact with cubemap shadow for pointlights
I am facing some difficulties with the use of a cubemap shadow associated to a poinlight (represented as the yellow bicone in the picture). The shadow map itself is generated properly (see picture).
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- 333
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82
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Generate Frustum from Clip Rectangle after Projection
I have an arbitrary Clip Rectangle, ranging from -1 to 1 which was obtained by min/maxing vertices after projection.
I want to cull triangles in a compute shader against this particular rectangle.
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224
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How to sample a R8_UINT texture in hlsl？
I'm a newbie in DX12 and trying to visualize Stencil buffer onto screen. I've been copied stencil plane slice into a DXGI_FORMAT_R8_UINT texture, but when HLSL samples this texture it just returns 0, ...
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110
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Blending/gradient/smoothing between textures in Texture2DArray in HLSL shader
Well, I have this triplanar shader:
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- 141
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264
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How to check input/output data for shaders in Renderdoc?
How can I check whether my vertex and pixel shaders' input and output have data in Renderdoc?
I have a problem with my pixel shader when I try to include input color. I get a black screen. When I ...
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498
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Use DirectX 11 & HLSL in SDL
I saw Lazy Foo using OpenGL & GLSL in SDL, but I want to use DirectX 11 & HLSL in SDL.
Is there a way to do this, and how?
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Incorrect Screen Space Reflection help
I'm leaving a question because I ran into a problem while implementing screen space reflection.
The way I do it is by sampling the position and normal map saved with deferred rendering, changing it to ...
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159
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Why do you use logarithmic curve to fix distortion of texture?
I'm a noob shader learner, and I came across this question about animated shaders in Unity: Animated textures for models; How to write a shader?
After reading the answer, I kind of understood the ...
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GLSL ported shader not working in HLSL
I have been working on an Infinity Grid shader for my engine.
It was already implemented to Vulkan’s GLSL, so it worked great with OpenGL’s (4.6) GLSL.
Here's a reference.
This basic shader with ...
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309
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Shader to give the effect of a 2D character covered in oil
I have a 2D pixel art game where characters can be covered in a flammable black oil-like substance and I am looking for a simple way to depict that visually.
Simply tinting the character black won't ...
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397
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Depth Map doesn't work in 2D URP
This is a further question from my last, originally I was trying to change the way the depth map is rendered per-pixel. However, through more testing, I've found that actually it has nothing to do ...
- 449
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61
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152
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Issues with binding structure layout in the shaders which translated from glsl to hlsl
I have a small issue with my shaders. Sorry if it is not the right place for this question. In general, the essence is that for my application on dx12, I have shaders in glsl (I'm too lazy to rewrite ...
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129
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Can you append values to an appendbuffer and then immediately read from that same buffer?
I am looking to achieve the following: I have a compute shader that receives a Texture2D as input, where a small percentage of the pixels in the texture are white. ...
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144
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Simple shader to draw lights on a skyscraper
I have some basic shapes in the background of a scene that represent a small city. There is a stage where the scene becomes a nights scene. I would like to have the city come to life at night with ...
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363
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How would I generate mipmaps for a 3D texture in Unity (at runtime)?
I have been trying to create a voxel cone tracer for Unity (in Universal Render Pipeline 16).
I have this (unoptimized) C# code that turns the [CubeScale] area around 0,0,0 of the scene into a 3D ...
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603
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How to use gather offsets
I have this situation where I have parts of the same scene in each 4 half squares of a rendertarget rendered with the same view projection matrices. In my deferred pipeline I would like to sample with ...
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462
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Iterating through every pixel in a shader - skipping pixels
I made the below shader to draw a mesh for every pixel on a texture, and color it with that pixel.
It iterates through the pixels, correctly drawing and coloring the mesh instances. However it skips ...
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How to support Texture Tiling + Offset for custom shader
I've written a custom shader (with help) and I'm not sure why it does not have tiling & offset capabilities. What is the simplest way to add that feature to my shader?
current shader code
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445
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How to use unconventional texture format
I would like to use a texture that could have more than 4 channels.
I have seen a post where they use a single channel R8 texture to store string chars.
I'm thinking of using something like that with ...
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414
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How to calculate the world position of pixels in an HLSL script?
I want to make a simple ray marching loop in the fragment shader. I think the main issue is that I'm not giving the correct world position input.
Here is my current attempt:
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100
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Weird result whe nusing OMSetRenderTargetsAndUnorderedAccessViews
My render pass consist in four passes.
3 first have 2 rendertargets and two unordered access view.
RTV0 = RG88 //store normal.xy
RTV1 = R32 //store depth
UAV0 = R32UINT //store color1
UAV1 = R32UINT//...
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153
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Screen position in Deferred Shading
I am trying to implement a program in Direct3D 11 which uses techniques like deferred shading and shadowmapping, but when I create my gBuffers, the position looks strange. After researching a bit I ...
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59
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using texture as variable
I was trying to use a texture as a variable in my shader (DX11 VS/PS 5.0). Can't get it.
I have recently find this piece of code here where a texture is passed as a function parameter.
Is that ...
- 333
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240
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Noise in compute shader related to threadsPerGroup
I have been working on a metaball compute shader for roughly 3 months now, and the only issue I have to resolve is noise in the output Dest[id.xy]. I also asked GPT 4 about the crux of the issue and ...
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897
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How to convert from object space to clip space
I want to animate foliage with vertex animation but I have wrong output because I can't correctrly transform from object space to clip space, and my foliage goes off the model. How Can I convert in ...
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221
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How to deform mesh's actual vertices, based on shader waves code?
I am using a shader that is applying a visual deformation that looks like Gerstner waves.
It works great, but I need the mesh's actual vertices to deform based on these formulas as well.
How can this ...
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536
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Pack 4 textures into one channel
Can I pack 4 grayscale textures into one channel by converting the textures into uints and packing them?
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394
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D3D11 ERROR ("invalid arguments") from HLSL shader
I am using MonoGame 3.8.1.303 with Windows/DirectX.
I am just rendering a TriangleList using DrawIndexedPrimitives, but I am ...
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588
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Putting two R16_UNORM in a R32_UINT
With my hardware limitation for CS5 I'm using R32_UINT in my shaders to store compacted colors and normasl as 555 bits each. My packing is using uint3 and the result is of poor quality.
I'm planning ...
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220
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Looking for an advice on how to possibly boost my compute shader
I have 4 rendertargets R10G10B10A2 each being used to store color and normal in a compact double RGB 555 bits format. When I'm doing the lighting pass I'm obliged to have extra rendertargets because ...
- 333
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559
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Reliably addressing compute buffer when using large numbers of threads
I'm trying to move a 262,144 [2^18] points (stars) in a compute shader and am struggling to reliably address the data in a buffer.
I understand that there's a 3-dimensional array ...
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252
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Problems with normal recovery from storage as two floats and normal from depth buffer
In my app I’m producing for my deferred shading 4 layers of data to show up occluded parts of the scene during screen space reflection (SSR) pass. I need normal maps with bumpiness of these layers for ...
- 333
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844
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error X4532 Cannot map expression to gs_5_0 instruction set
Using DX11 I have this line starting with TC = txDiffuse in a geometry shader that generates the error message. Can someone explain me the problem or if it is not possible to sample in geometry shader ...
- 333
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365
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How to add inverted hull outline to desired objects in HLSL?
I am currently trying to edit a Vertex Shader of a game and want to add inverted hull outlines to the desired objects, but there are a lot of tutorials on the inverted hull for Unity, Blender, and ...
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Difficulties in converting RGBA to float and back
I can't get my colors back.
What I'm using to encode/decode:
...
- 333
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373
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Shadowmapping in view space
UV coordinates for shadow mapping are usually calculated from world position. I want to make it compliant with my screen space reflection (SSR) pipeline which works in view space.
Is it possible to ...
- 333
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1k
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412
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How do I make a shader that simulates acrylic paint being smeared on a surface?
I know something about shaders, I have written some very basic shaders. This is the most advanced shader I have written so far.
It's been several days since I conceived the idea of trying to recreate ...
- 121
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920
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24bit float to RGB
There's solutions to convert float to RGBA but I would like to encode a float depth value in RGB format and save the three components in three separated unused alpha channels and recompose when needed....
- 333
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3k
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How do I cast a float4 to a float[4]?
I've a RGBA16F texturecube for 4 pointlights shadows rendered in one pass. Each color channel stores the object to light distance for one pointlight shadow (e.g red channel is for light 0 and so on). ...
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368
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How do I offset a texture pointer in order to store an array of D3D11_SUBRESOURCE_DATA?
I'm attempting to load a sequence of frames from a GIF into a Texture2DArray using stbi_load_gif_from_memory which returns a ...
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